OK, back to your regularly scheduled topic.
Full brightness is WAY too bright...the highest I will ever set it is half way. Of course that will kill the battery. You could light a room with that thing.
I use full brightness whenever I am studying in a lit room, I like it better that way. But in even a mildly dim room, it gets turned down to 1/2 or less.
Yeah battery life is much better with brightness down, full I think takes about 4 hours off the 10 hour average life. But my other problem is charging does seem really slow, it's about 11 percent an hour just in sleep mode not off. So it takes like 9 hours to reach 100. Maybe my charger is bad but I checked it is the offical ipad one.
After 4.2 update, my battery seemed to drain much faster. I read on the Apple forum that turning off "Find My iPad" in MobileMe would extend battery life. I turned it off and battery drain seems to be back to pre 4.2 days.
Money grows on the tree of persistence.
Posted from my iPad WiFi 64GB